Migrate to typescript

src/content/config.ts

@@ -0,0 +1,27 @@
+import { z, defineCollection } from 'astro:content';
+
+const blog = defineCollection({
+	schema: {
+		title: z.string(),
+		description: z.string().optional(),
+		image: z.string().optional(),
+
+		canonical: z.string().url().optional(),
+		permalink: z.string().optional(),
+
+		publishDate: z.string().transform((str) => new Date(str)),
+		draft: z.boolean().optional(),
+
+		excerpt: z.string().optional(),
+		category: z.string().optional(),
+		tags: z.array(z.string()).optional(),
+		authors: z.array(z.string()).optional(),
+	},
+	slug: ({ defaultSlug, data }) => {
+		return data.permalink || defaultSlug;
+	},
+});
+
+export const collections = {
+	blog: blog,
+};